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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 677 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Air Conditioning (A/C) High Pressure Switch Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant the system. Refer to Refrigerant Recovery & Recharging .
  2. Clean the control A/C high pressure switch area before removing the snap ring.
    3. Fig 1: A/C High Pressure Switch
    G01666534Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the electrical connector from the A/C high pressure switch (2).
  4. Remove the A/C high pressure switch snap ring using a pair of 90 degree angle pliers or J 5403  .
  5. Remove the A/C high pressure switch (2) from the compressor.
  6. Remove the old O-ring seal from the A/C high pressure switch cavity using the J 9553-01  .
  7. Inspect the A/C high pressure switch cavity and the O-ring groove in the rear head for dirt or foreign material. Clean the components as necessary.
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